IELTS reading detail Practice
現代LED燈的哪個特點使其更加「暗空友善」？
Question type: multiple choice · Difficulty: intermediate
- A. (A) 它們比舊燈泡消耗的能量顯著減少。
- B. (B) 它們通常配備運動傳感器。
- C. (C) 它們提供較暖色調，藍光較少。
- D. (D) 它們更容易安裝到現有燈具中。
Explanation Preview
Paragraph F directly addresses this by mentioning that 'manufacturers now offer a wide range of 'warm-white' or amber LEDs (with a colour temperature below 3000 Kelvin) that are significantly less disruptive'. While other points might be true of LEDs in general, this is the specific reason given for them being 'dark-sky-friendly'.